we are revamping the (would be) essential outside toilet. made the mistake of asking a bathroom company for advice on choosing a toilet, they have declared their warranty would be invalid if toilet placed outside. Well it won't be outside outside, it will be in a little room on its own . So advice please. There was a little toilet with a high cistern, possibly made of bacolite (sorry about spelling). Toilet is long gone, but all can be made good. Any one offer any advice for a toilet with a waste pipe that goes downwards, not out the back?